About Audio Cleaner Pro

Audio Cleaner Pro is a browser-based pre-mastering studio for anyone who needs a track to sound finished. It runs a full corrective chain — a 40 Hz sub-steep guard that slices out inaudible rumble, a dynamic sub-bass filter, an adaptive high de-esser for sibilance, and a 12-band graphic equalizer whose 3 kHz band targets the glassy fizz of generative AI vocals — then finishes with level-matched stereo width, a program compressor and a loudness optimiser tuned for either streaming or club playback, plus an adjustable fade-in and fade-out envelope that eases the track in and out on its own timeline.

A 12-band analyser with a genre reference line, a spectrogram, a phase correlation meter and a true-peak meter with reference ticks show what the chain is doing, so every move is a measured decision rather than a guess.

What it does

Everything happens locally in the browser with the Web Audio API: your audio is decoded, processed and rendered on your own machine, and the batch queue turns a folder of rough mixes into finished files. The 24-bit WAV and the MP3 carry the titles, artists and track numbers you type, and the 16-bit WAV goes out as bare PCM for distribution. Give a row a stem category — Drums, Bass or Lead Vocal — and two or more of them are auditioned together and summed into one mastered file, each part carrying the corrections its category asks for. Your audio is never uploaded, and no audio is stored on a server — the only records kept are your account, your export credits and any message you send us.

Exports come out as 16-bit WAV for distribution, 24-bit WAV for a DAW handoff, or 320 kbps MP3 for quick review. Files carry no watermark, and there is no restriction on what you do with what you export.

Who it is for

It is built for independent producers, beatmakers and vocalists who mix their own records and want a fast corrective pass before release. Podcasters and voiceover artists use it to clear room rumble and harsh consonants, AI-music creators use it to smooth generated vocals and lift a mix onto a normal loudness target, and mastering engineers reach for it as a cleanup stage before their own chain. It is also useful for anyone who needs to audition a demo at a consistent level or check whether a mix survives a mono fold-down.

What it will not do

A corrective pass fixes rumble, sibilance, fizz, a narrow or unstable stereo image and an off-target loudness. It will not remix a track, repair clipped or damaged files, or stand in for a full mastering chain on a record that needs one. The Mastering Guide goes through each stage and where its limits sit.

Who builds it

Audio Cleaner Pro is built and maintained by Steven Alston, an independent developer. The processing chain is written against the Web Audio API rather than assembled from plug-ins, and the export engine builds each WAV bitstream itself and encodes the MP3 in the browser, so a render depends on nothing but the page: no server, no plug-in bundle. It exists because a corrective pass should not need a studio session or an expensive plug-in bundle.

Questions, bug reports and feature requests all reach the same inbox through the contact page, and a reply comes back to the address you leave there.

Free to try, three ways to export

Listening, loading files and moving every control is free and unlimited, and there is nothing to install. Every account comes with three exports a day, in whichever format you have selected; past that, a credit pack or the unlimited plan takes over. Prices are in US dollars.

Payments run through Stripe, with a receipt sent to the address you give at checkout. The monthly plan can be cancelled at any time from the link on that receipt, and access simply runs to the end of the paid period. Export access is granted by the purchase ledger on our server rather than by anything stored in the browser.

The Terms of Service set out the billing arrangement and what is expected of you, and the Privacy Policy explains exactly what is stored and where.

Last updated 10 October 2026